Detrimental beam dynamics effects limit the performance of high-intensity rapid cycling synchrotrons (RCSs) such as the 8 GeV proton Fermilab Booster. Here we report the results of comprehensive experimental studies of various beam intensity dependent effects in the Booster. In the first part, we report the dependencies of the Booster beam intensity losses on the total number of protons per pulse and on key operational parameters, such as the machine tunes and chromaticities. Then we cross check two methods of the beam emittance measurements (the MultiWires proportional chambers and the ionization profile monitors). Finally, we used the intensity dependent emittance growth effects to analyze the ultimate performance of the machine in the present configuration, with the maximum space-charge tuneshift parameter $\mathrm{\Delta }{Q}_{\mathrm{SC}}\sim 0.6$, and after its injection energy is upgraded from 0.4 to 0.8 GeV.

中文翻译：

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Fermilab Booster同步加速器中的光束强度效应

有害的束动力学效应限制了高强度快速循环同步加速器（RCS）的性能，例如8 GeV质子费米实验室助推器。在这里，我们报告了Booster中各种与光束强度有关的效应的综合实验研究的结果。在第一部分中，我们报告了Booster束强度损失与每个脉冲的质子总数以及关键操作参数（例如机器调谐和色度）的相关性。然后，我们交叉检查了两种光束发射率测量方法（MultiWires比例室和电离曲线监测器）。最后，我们使用强度相关的发射率增长效应，以最大空间电荷调变参数分析了当前配置下机器的最终性能。$\mathrm{\Delta }{问}_{\mathrm{SC}}〜0.6$，并在注入能量从0.4 GeV升级到0.8 GeV之后。